[0,0,0,0,1,1,2,1,2,3,4,2,4,4,5,5,6,4,6,4,6,7,8,6, 8,9,9,8,10,7,10,9,10,11,12,10,13,13,14,13,15,12, 15,13,13,15,16,14,16,15,17,16,18,16,18,17,19,20, 21,17,21,21,20,21,22,20,23,21,23,21,24,21,24,24, 23]